The United States and Canada need European allies for trade agreements, military operations, and cybersecurity

Study and practice of how sovereign states, international institutions, and non-state actors interact across borders. Encompasses diplomacy, negotiation, alliances, and conflict — the foundational domain through which global order is constructed, contested, and maintained.

The alliance's cooperation with Western partners: collective defence and deterrence, defence-industrial and technology investment, burden-sharing and the coordination of military support among member states and allied governments.